Missa Brevis is a major work for choir and brass band for performance in church or in the concert hall. For this mass, there are many performance possibilities depending on the musicians available. In addition to the standard orchestration of choir and band a brass quartet can also play the choral parts. For this it is desirable for the brass quartet to be positioned separately from the rest of the band (on a gallery, for example), so that the idea of two choirs is heard. It is also possible to perform the work with brass band and organ. A truly flexible religious masterpiece.